Patents in subclass Excavating/Beneath A Body Of Water (E.G., Dredger)

Parent class: Excavating

Number Patent title Issue Date
07011749 Remediation with ozone of sediments containing organic contaminants

A system for treating sediments contaminated with organic contaminants, such as polychlorinated biphenyls (PCBs) and other contaminants polyaromatic hydrocarbons (PAHs) and dichlorodiphenyltrichloroethane (DDT) includes treating the...		 03/14/2006
06922922 Amphibious dredging vehicle and method for restoring wetlands using same

An amphibious dredging vehicle includes a base including a pair of floatable pontoons linked together in essentially parallel relation; a cutterhead dredge system that is mounted on the base and that includes a cutterhead mounted on the...		 08/02/2005
06874261 Method for treating an underwater bed

A method of forming a trench in the bed of a body of water, the bed having an initial undisturbed upper surface, comprises suspending a pressure line from a vessel floating on the body of water, the pressure line terminating downwardly in...		 04/05/2005
06821054 Method and system for laying pipe through the use of a plow

A method and system for laying and burying pipe a seabed using a pipe trenching plow that is advanced along the seabed to form a continuous trench. The pipe trenching plow cuts a pilot hole in the seabed using a cutting apparatus and...		 11/23/2004
06755701 Amphibious vehicle with submersible capacity

An amphibious vehicle with submersible capacity includes a first portion and a second portion, coupled by an extension, and a valve assembly. The first portion is capable of floating on water while the second portion is contemporaneously...		 06/29/2004
06540925 Oil recovery method and oil recovery apparatus

An apparatus for recovering oil has a bucket for skimming and collecting water and oil floating on the surface of the water. The bucket has a base plate having apertures for draining water collected by the bucket. The apertures have a...		 04/01/2003
06374519 Dredging apparatus

A dredger for removing sand, silt and like material from a river or seabed has application to clearing wrecks and providing trenches in which, for example, pipeline may be laid. The dredger includes a body having first thrusters to...		 04/23/2002
06357149 Method and apparatus for determining the depth of acceptable sediment removal from a body of water

The depth of sediment material under a body of water having a minimum desirable consistency or strength for a dredging operation is determined by an arm assembly having one end portion pivotally connected to a substantially horizontal...		 03/19/2002
06263594 Dredging system

The present invention is useful for dredging underneath a floating vessel, where a conventional dredge cannot reach the location of the material to be dredged. A neutral buoyancy pipe is attached to the end of the suction pipe and acts as...		 07/24/2001
6152656 Material delivery system

A material delivery system conveys material from a supply location at or above an area surface to a working location below the area surface. The delivery system includes a supply hopper located at the supply location and having an inlet...		 11/28/2000
6125560 Dredging apparatus

A dredging apparatus comprising a body mounting thruster to direct, in use, a wash of water downwards towards an area of sea bed or the like, connection device to connect the dredging apparatus to a support vessel above the sea bed, said...		 10/03/2000
6041527 Bidirectional dredge apparatus

A bidirectional dredge provides active dredging on both forward and reverse passes across an area being dredged. The dredge includes a pivot turning mechanism that allows a turnaround of the dredge, allowing each pass to start at the...		 03/28/2000
6010624 Contaminated sediment treatment process

A system and method for the treatment of contaminated sediment found in rivers, lakes and certain bodies of water, wherein the contaminated sediment is removed from the body of water as part of a liquified mixture including both water and...		 01/04/2000
5979088 Dredging installation

An installation for sucking up material from the bed of a body of water includes a housing (1) that is provided with a suction pipe (2) which extends toward the bed of the body of water and that has a suction opening (22) and is connected...		 11/09/1999
5938936 Method for dewatering flocculated materials

The present invention is directed to a continuous, portable dredging system that employs a series of screens and gravity separation devices with flocculation to remove sediments from the dredged slurry. The system produces a treated water...		 08/17/1999
5913604 Dredging installation

An installation for sucking up material from the bed of a body of water includes a housing (1) that is provided with a suction pipe (2) which extends toward the bed of the body of water and that has a suction opening (22) and is connected...		 06/22/1999
5804069 Apparatus for extracting water from marine sediments

A mesh enclosed container is provided to remove melt water from frozen blocks of contaminated sediment which has been extracted from a marine environment. The mesh enclosure has a number of porous wicking tubes for insertion into...		 09/08/1998
5636457 Method of dredging via freezing and removing sediment

A freezing cell having one or more freezing tines may be used to remove contaminated sediment from the beds of water bodies. The freezing tines are to be immersed into the sediment. Refrigerant is supplied to the tines by a refrigeration...		 06/10/1997
5595134 Towing system for dredges and method for using same

A towing arm assembly for use with a towing vessel has a towing arm support affixed to each side of the towing vessel. Each towing arm support receives in sliding engagement in a horizontal channel therein a pin connected to a proximal...		 01/21/1997